Boring-machine.



BEST AVAILABLE COP No. 761,171. -PATENTED MAY 31, 1904.

' D. HBPP.

BORING MACHINE.

- APPLICATION nmm my 21; 1903. 110 MODEL. asHBETsPsKEET 1.

W1 TNESSES: 5 1' NVEzvroke C @Z Aflomey b4: mums was" so, momumu. msmmm. n. c.

BEST AVAILABLE'COFHTENTE'D 1904.

1), HEPP. BOEING MAGHIN'B. APPLICATION rum) nu 2x. 1903.-

a salami-sum 2 m: lawns rcrsv ws no WTO-uvw., WASHANGTON, n. c.

BEST AVAILABLE COP N0. 7 1,171. 4 PATENTED MAY 31, 1904.

n. HERB. BORING MACHINE. LPPLIUATIOI FILED KAYQI, 1903.

3 SHEETBSHBET.3..

N0 MODEL.

j 6 4 w v 4 R; 2 1% m 7/ J v w 0 A 4 52 2 1 i 9 w E 0 w a 1. wi fi o 5 T H w a w w i; I A 6 w 7% w 2 Witnesses taken on the line 5 5 of Fig. 1.

drive-shaft.

sectional view through oneof the double tool- UNITED STATES BEST AVAlLABLE COP Patented May 31, 1904.

DANIEL HEIP, OF CHICAGO, ILLINOIS.

BORING-MACHINE.

SPECIFICATION forming part of Letters-Patent No. 761,171, dated May 31, 1904.

'1 hpplication filed May 21,1903. Serial N 158,187. (no model.) I I To all whom it inter concern:

Be it known that I, DANIEL HEPP, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Boring-Machines; and I dodeclare the following to .bea full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to boring-machines, and more particularly to machines for boring the rails and stiles of doors, Window-shutters, and other woodwork.

The object of the invention is to provide a machine of this character by means of which the rails and stiles may be rapidly and perfectly bored without being marked or laid out, so that when put together the doors or frames will be absolutely square and have perfectly-true faces. I

Further objects are'to produce a machine of this character which is simple and durable in construction and veryeflicient in operation.

With these and other objects in view the invention consists of certain novel features of construction, combination, and arrangement of parts, as will be more fully described, and

particularly pointed out in the appended claims.

In the drawings, Figure 1 is atop plan view of a machine embodying my invention. A Fig. Fig. 3 is anv Fig. 4: is .aver- 2 is a side elevation of the same. end elevation of the machine. tical longitudinal sectional view taken on, the

plane indicated by the line w m of Fig." 5.

Fig. 5 is a vertical transverse sectional view Fig. 6 is a detailview showing the manner of clamping the work upon the work-holders. Fig. 7 isa detail view showing the locking-plate for the Fig. 8 is .a detail longitudinal holders or boring-heads,- taken on the plane indicated by the line 3 y of'Fig. 9. Fig. 9 isframe 2, upon which a series of double or compoundtool-holders or boring-heads 3 are adjustably secured, 'is adapted to be adjusted vertically by providing upon the under side of the same the inclined portions or blocks 4:, which engage the similarly-inclined portions 5 upon a lower box or frame 6. The box 6 is mounted in the mainframe 1 so as to slide. longitudinally and is adjusted by providing the screw 7, which passes through a threaded aperture in one end of the main frame and has its inner end swiveled to said box or 1 frame 6. The outer end of said screw is provided with'a hand-wheel 8, by meansof which;

it may be operated to move the sliding ower frame 6 longitudinally. Since the upper supporting-frame 2 is supported in the frame 1 by the inclined portion 4, resting upon the inclinedportion 5, it will be seen upon refer:

ence to Fig. 4 ofthe drawings that the longitudinal or horizontal movement of the lower frame will impart a vertical movement to the upper frame 2. The purpose of this adjustment will be hereinafter explained.

Each of the boring-heads 3, of which any number may be employed,comprises the transversely-disposed plate or frame 9, upon which the bits and drivinggear for the same are mounted. These bit-frames 9 have a dovetail connection with the supporting-frame 2, as shown at 10, in'order .to permit'them to be moved longitudinally thereon and are adapted to be held in an adjusted position bythe clamping-screws 11.

.Upon the topof thebit-frames 9 suitable boxes 12 are provided, in which the spindles of the bits and other gearing are journaled.

13 denotes the bits,one of which is secured ineach end of the spindles 1 1, which are journaled in the boxes 12. Any desired number or arrangement of these spindles may be used, and the'shanks of the bits are removably secured in the same by being inserted in the gear 15, which meshes with the gears 16 upon the short shafts or spindles 17 The spindles 17 are arranged above and between the spin- "under'' the guideor idler pulleys-24at each 1 fend of the machine. The pulleys 24 are each 'securedto a shaft or spindle which is suitably journaled in bearing-boxes upon a frame dles 14, so that eachof the gears 16 will mesh with two of the gears 15. One of the gears 16 mm mesh with a larger drive-gear 18, keyed to a shaft or spindle 19, upon which a drive-pulley 20 is also secured. An idlerpulley 21 is disposed above said pulley or driver 20 and is secured to a shaft or spindle 22. Vt hile all of these spindles may be jour naled in any desired manner, I preferably provide the removable bushings or tubes and journal the spindles therein, as illustrated in Fig. Softhedrawings. I v, t g

In order to rotate the bits by'means of the gearing just described, a belt 23 is'passed about the pulleys 20 and 21 as shown in Figs.

2 and 4 of the drawings. This 'belttalso passes 26 ,seci1red at each end of the machine to the "supporting-frame'2. The belt 23pass'es up be driven,

"Qo'yer a'pulley (not illustrated)" upon anover head .p' wer shaft,by' means of which it may fp'os'ed' at each side of the mainframe;

The work holdersor benches 27." are adjustably'secu'red to the sliding rods, and each comprises the channel-iron bench 'or table 32, to

' the under side of which the'clamping brackets '33 are bolted or otherwise secured. The split ends 34 ofthe' brackets, through which-the rod 28, passes, are clamped upon the sameby' the, screws 35. Adjustably mounted-upon thetop of the benches or tables 32 are the sliding plates or guides 36, which areadapted to be'clamped upon the benches by means of a clamping-bolt 37 and nut 38. This kbolt 37 passesthrou'ghthe downwardly-projecting inner portion 39 of the guide 36 and through a'longitudinal slot formed by the bottom of the inner side of the bench 36 and an angle-iron strip '40,

which is secured upon the brackets '33 below the said bench. The head of this bolt 37' is upon the inner side of'the slot thus formed,

and the clamping-nut 38 is screwed on the threaded end of the bolt upon'the outer face I of the portion 39. It will be observed that f by this construction the guides 36 may be adjusted at any desired points on the bench 32. The top of the guides are provided'with the fixed stop 41 and the apertures 42, in which thestop-pins' 43 are inserted, as hereinafter descrlbed.

Asshown in Figs. 1 and 5 of the drawings, the stile S or the rail R rests upon the guides clampedupon the sliding bars.

BEST AVAlLABLE COP 36, and in order to support the rail R in a horizontal position I provide the supporting rods 44, which are carried by the adjustable brackets 45. These brackets have their lower ends clamped upon the outer ends of the slid- =ing bars 28 by the screws or bolts 46, and their 7 upper ends are bored and cut away, as shown at 47, in order to receive the supporting-rod 44; W hen it is not-necessary to use this rod 44, it may be pulled out of the brackets'by sliding the same longitudinally, and the brackets may also be removed. Adjustable stops in the form oflblocks 48 are secured upon the supporting-rods by suitable set-screws and are adapted to assist in holding the rails R at right angles to the machine. In order to hold thework, either the stile or the rail, upon the guides during the boring operation, the

same is clamped down by means of a beam or bar 49.: (Shown in Fig. 6- of the drawings.) These beams, which extend longitudinally -over the benches or tables 32, have their ends clamped under the clamping brackets or arms 50, which are formed at each end of the benches.

a A- pressure head or nut51, swiveled upon the "endof a screw 52, which passes through the bracket, is adapted to bear upon the beam 49 to clamp the same. The screw 52'is provided at its"=upper end with an operating handwheel53, Aspreviously'stated, the work holders or benches are secured to the sliding bars 28,

whichwhen reciprocated will bring the work clamped upon thetwo benches alternately up to the compound or double-end boring-heads 3. As illustrated in the drawings, the 'reciproeating movement'of these rods may be imparted'from the drive-shaft 54 in either of two' ways. This drive-shaft 54 extends longitudinally through the center of the machinebetween the'sides'of the main frame and is journaled in suitable bearings in the ends of said .frame.

55 denotes gears or pinions secured to the drive-shaft at intervals corresponding to the spaces between the sliding bars and adapted to mesh'with' the, rack-plates 56, which are 57 denotes grooved cam plates secured upon the said shaft at corresponding intervals, and 58 denotes brackets clamped to the sliding bars and carrying the studs or projections 59, which are adapted to travel in the cam-grooves of the plates 57 The'drive-shaft 54 has a slight longitudinal or sliding movement to permit either the pinions and racks or the cam-plates and 1 studs to be moved into and out of engagement with each other.

It will beunderstood that when the pinions 55-and the racks 56 are in mesh the studs 59 will not project into the cam-grooves in the plates-57. The rotation of the drive-shaft when the studs 59 engage the cam-plates 57 and the pinions and racks are not in mesh will cause the sliding rods 28 to be reciprocated back and forth a predetermined -distance, owing to the travel of the studs in the camgroov'es. 'VVhen the cam-plates operate the sliding rods, it will be seen that the reciprocation or movement of the benches toward the boring-heads 3 will always be definite'and the same, sothat this cam-gearing is usedfwhen regular work is done upon the machine that is, when all the holes bored-are to be the same depth." When it is desired'to bore any special work or when it is "desired to bore the holes to a greater or les's'fdepth than they would be bored by using the cam feed or gearing, I disengage the latter and throw the racks 55 and pinions 56 into gear by'shifting the shaft lengthwise. hen this rack-gearing is employed-,the drive-shaft must be rotated alternately in reverse directions, and thislaccomplish by means of frictional gearing, hereinafter described. 1 j

The shaft is adapted 'to be locked against sliding OrlOngitudinaI movementby provid ing adjacent to one end the annular grooves 60, one of which is adapted to be engaged by the semicircularly-notched plate 161, which is clamped upon one end of the machine by the clamping-bolt 62 passing through an elongated apertureor slot in the plate to permit adjustment of the same. Each end of the drive-shaft 54L is provided with a hand-wheel 63, by means of which it may be adjusted and turned.

Fixed upon the drive-shaft adjacent to one end is a large friction-gear 64, which is adapted to be engaged and driven by either one of the two small friction wheels 65. These wheels 65 are carried byan operating or shifting lever 66, which is adapted to hold either of the wheels 65 in contact with the large friction-wheel 64. The lever 66 has its lower end pivoted at 67 to one end of the main frame and is formed with the central opening 68, through which the shaft 5& projects. The small friction-rollers 65 are secured upon shafts 69, which are journaled in the bearingbrackets 70 upon each side of the lever. The upper end of the lever is formed with an operating-handle 71 and with the three notches or apertures 7 2, through which and an aperture in the end of the main frame a pin or bolt- 7 3 may be passed to hold the lever in any desired position. When the lever is in its central position, as shown in Fig. 3 of the drawings, both of the small friction-wheels are out of contact with the large friction-wheel, and when the lever is moved to either side and locked by the pin 73 one or the other of the small wheels will be held against the large one. Upon the shafts or spindles 69 are also secured the pulleys 74, which are adapted to be connected by the belts 7 5 to suitable pulleys (not illustrated) upon an overhead power-shaft. One of the belts 75 is crossed in order to drive one of the pulleys 65 in the reverse direction from the other of said pulleys. It is thus BEST AVAiLABLE COP seen'that the drive-shaft 55L will be rotated in eitherdirection,as,desired, according to which of the two wheels 65 engages the large wheel 64:. 7

The operation of the machine is as follows: When it is desired to bore rails, they are placed upon the guides 86 and rods PL and clamped down-against the stops 41, 4.2,and 48 by the beams 49, as, previously explained. When stiles are to be bored, they are placed longitudinally upon the guides 36 and clamped in a similar manner. The machine is designed to be controlled by two operators, one being upon each side. After the bits are set in motion by means of the gearing previously de scribed, which is driven by the belt 23, the lever 66 is shifted to either side to bring one of the small friction-wheels into engagement with the large friction-wheel 64 upon the drive-shaft'54 in order to rotate the latter. When the: drive-shaft is connected with the sliding bars 28 by the cam-gearing, it will be seen that the work-holders upon each side of the machine will be moved alternately toward and from the boring-heads in order to bore the holes in the work upon said benches, as will be readily understood. a By moving the lever 66to its central position the movement of these work-holders will be stopped. When the rack and pinion gearing connects the sliding bars and the drive-shaft, it will be necessary to throw the lever 66 first to one side and then to the other in order to permit one of the reversely-driven friction-wheels 65 to move the shaft in one direction and then to permit the other small wheel 65 to reverse the movement of the shaft. By means of this gearing it will be noticed that the work-holders may be moved any desired distance toward or from the boring-heads, and hence the holes may be bored to any desired depth.

By operating the hand-wheel 8 it will be seen that the supporting-frame for the boringheads may be raised or lowered, and thus permit the bits to be adjusted vertically to accommodate lumber of different thicknesses. Owing to the sliding connection of the boringhead frames 3 with the frame 2, the said heads may be adjusted horizontally. By making the benches 32, guides 36, supports 44, and the various parts adjustable,-as previously ex-, plained, it will be seen that various kinds of woodwork may be bored upon the machine. By providing the cam and the gear feeds for the work holders or benches the regular depth of boring or a greater or less depth than the regular may be had.

From the foregoing description, taken in connection with the accompanying drawings, the construction and operation of the invention will be readily understood without requiring a more extended explanation.

While I have shown and described my invention in its preferred form, it will be understood that various changes in the form,

proportion, and the minor details of. construction may be resorted to Without departing from the principle or sacrificing any of the advantages of this invention.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-

1. The combination-With a boring-head and a work-holder, one shiftable toward and from the other, a shaft, means to rotate the shaft, and interchangeably effective means, operated by the shaft to shift one of the first-mentioned elements, one of said shifting means being effective to shift said shiftable element to an invariable extent, and the other of said shifting means being effective to shift said shiftable element to a variable extent, substantially as described.

2. In a boring-machine, the combination of a suitable main frame, double tool-holders or boring-heads mounted thereon, sliding bars in said mainframe, work-holders upon said sliding bars at each side of the main frame, a V

BEST AVAiLABLE CQP drive-shaft in said main frame, a raclpand pinion gearing between said shaft and sliding bars, and a cam-gearing between said shaft and sliding bars, said shaft being slidable to throw either said cam or said rack-and-pinion gearing into or out of operation, substantially as described.

4:. In a boring-machine, the combination of a suitable main frame, an adjustable supporting-frame mounted thereon, double tool-holders adjustably mounted upon said supportingframe, sliding bars in said main frame, adjustable work-holders upon said sliding bars at each side of said main frame, a drive-shaft in said main frame, and an interchangeable cam or rack-and-pinion gearing between said shaft and sliding bars, substantially as described.

5. In a boring-machine, a reciprocating work'holder comprising sliding bars, adjustable benches or tables upon said sliding bars,

adjustable guides or plates upon said benches,

DANIEL HEPP.

Witnesses:

' NELLIE FULLERTON,

WM. L. CzosoHKE. 

